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United States Patent | 6,008,742 |
Groves | December 28, 1999 |
The Aircraft Landing Gear Warning System is an electronic device designed for general aviation aircraft having retractable landing gear. The unit attaches to the aircraft. The system incorporates means of determining the aircraft's proximity to the ground and the status of the landing gear. If the device determines that the aircraft has descended to approximately 100 ft. above the ground and the wheels are retracted, the device provides a visual and audible warning to the pilot.
Inventors: | Groves; Duane (3036 Eagle Bend Rd., Springhill, FL 34606) |
Appl. No.: | 859727 |
Filed: | May 21, 1997 |
Current U.S. Class: | 340/960; 73/178T; 340/945; 340/963; 340/970 |
Intern'l Class: | G08B 021/00 |
Field of Search: | 340/970,977,960,945,963 73/178 T 701/3,14,16,4 342/29,65 |
3860925 | Jan., 1975 | Darboven, Jr. | |
3946358 | Mar., 1976 | Bateman | 340/970. |
4041341 | Aug., 1977 | Hart | 340/970. |
4516124 | May., 1985 | Shannon et al. | 340/960. |
4792904 | Dec., 1988 | Reinagel et al. | 340/953. |
4806935 | Feb., 1989 | Fosket et al. | 342/120. |
4916447 | Apr., 1990 | Vermilion et al. | 340/970. |
5745053 | Apr., 1998 | Fleming, III | 340/970. |
Pioneer Brochure, Mar. 5, 1940, cl. 340-960. |